| // Copyright 2017 The Bazel Authors. All rights reserved. |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package com.google.devtools.build.lib.analysis.platform; |
| |
| import com.google.auto.value.AutoValue; |
| import com.google.common.collect.ImmutableList; |
| import com.google.devtools.build.lib.analysis.TransitiveInfoProvider; |
| import com.google.devtools.build.lib.cmdline.Label; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec; |
| import com.google.devtools.build.lib.skyframe.serialization.autocodec.AutoCodec.VisibleForSerialization; |
| |
| /** |
| * Provider for a toolchain declaration, which associates a toolchain type, the execution and target |
| * constraints, and the actual toolchain label. The toolchain is then available for use but will be |
| * lazily resolved only when it is actually needed for toolchain-aware rules. Toolchain definitions |
| * are exposed to Skylark and Bazel via {@link ToolchainInfo} providers. |
| */ |
| @AutoValue |
| @AutoCodec |
| public abstract class DeclaredToolchainInfo implements TransitiveInfoProvider { |
| /** |
| * The type of the toolchain being declared. This will be a label of a toolchain_type() target. |
| */ |
| public abstract ToolchainTypeInfo toolchainType(); |
| |
| /** The constraints describing the execution environment. */ |
| public abstract ConstraintCollection execConstraints(); |
| |
| /** The constraints describing the target environment. */ |
| public abstract ConstraintCollection targetConstraints(); |
| |
| /** The label of the toolchain to resolve for use in toolchain-aware rules. */ |
| public abstract Label toolchainLabel(); |
| |
| /** Returns a new {@link DeclaredToolchainInfo} with the given data. */ |
| public static DeclaredToolchainInfo create( |
| ToolchainTypeInfo toolchainType, |
| ImmutableList<ConstraintValueInfo> execConstraints, |
| ImmutableList<ConstraintValueInfo> targetConstraints, |
| Label toolchainLabel) { |
| return create( |
| toolchainType, |
| new ConstraintCollection(execConstraints), |
| new ConstraintCollection(targetConstraints), |
| toolchainLabel); |
| } |
| |
| @AutoCodec.Instantiator |
| @VisibleForSerialization |
| static DeclaredToolchainInfo create( |
| ToolchainTypeInfo toolchainType, |
| ConstraintCollection execConstraints, |
| ConstraintCollection targetConstraints, |
| Label toolchainLabel) { |
| return new AutoValue_DeclaredToolchainInfo( |
| toolchainType, execConstraints, targetConstraints, toolchainLabel); |
| } |
| } |